Gymnasium apparatus.



No. 802,388.. PATENTED OCT. l', 1905. A. J'. 'THORBTIEYn GYMNASIUMAvPPARA'IUS. APPLIUATI'ON'FILED MM2, 1905.

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ALBERT J. THORNLEY, OF PAX/VLUOKIP, itlflODE lrLANl), ASSlGfNOR TO NARRAGAN SET" MACHINE COMPANY, OF ,l?A"iV'.l `UOKlQ', RHODE ISLAND.

Specification of Letters Patent.

Patented Oct. 17', 1905.

To all wit/)71a '/'fb 77u14/ con/067%:

Be it known that l, ALBERT J. Ti-ionnner, a citizen of the UnitedStates, residing at Pawtucket, in the county ol' Providence and Stateoit Rhode Island, have invented a new and useful Improvement inGymnasium Appz'tratus, ot' which the following is av specilication.

This invention has reference to an improvement in the means for securingparallel bars or other gymnasium apparatus to the llioors ol.gymnasiums.

1n the use of parallel bars, horses, or other exercising apparatus inthe gymnasium it is required that the apparatus should be iirmly securedto the ioor of the gymnasium when in use. Vhen not in use, they areremoved from the floor ot' the gymnasium, so as to give an unobstructediloor-space for class exercises or other purposes.

The object oi my invention is to detachably secure the supports ofparallel bars or other gymnasium apparatus to the iioor of thegymnasium.

A further object of my invention is to provide the floors of gymnasiumswith sockets permanently embedded in the ioor, said sockets being1adapted to receive the lower ends of the supports of parallel bars orother gylfnnasium apparatus to firmly hold and lock the same in thesockets when in use with means for closing the openings in the socketsliush with the iioor-line when the apparatus is removed from thesockets.

My invention consists in the peculiar and novel construction ot' socketst'or gymnasium apparatus, said sockets being embedded in the iioor ofthe gymnasium flush with the tloorline and adapted to lirmly hold thesupports ot' parallel bars or other gymnasium apparatus to lock the samein the sockets when in use, with means for closing the opening in thesockets when not in use, consisting of a hinged Figure l is a top planview olI my improved double socket, showing the right-hand socket closedand the support of a gymnasium apparatus locked in the let't-hamlsocket. Fig. 2 a vertical sectional view taken lengthwise through thedouble socket, showing the righthand socket closed by a hinged cover andthe lower end ol: the support olf a gymnasium apparatus in the leltdiandsocket. Fig. 3 is a detail plan view looking at the under side oil thelett-hand socket, and Fig. 4 is an enlarged detail view ol the hingedcover removed from the socket and looking at the under side ol thecover.

ln the drawings, t indicates my improved double socket; I), the lowerend of a support Ator parallel bars, horses, or other gymnasiumexercising apparatus, and c c the iioor-line ot' a gymnasium, asindicated in broken lines in Fig. 2. lhe double socket rzA consists ot'a pair olE inverted truncated cone shaped sockets a a', connectedtogether by the plate ci and the strengthening-web a, all formedintegral, as shown in Fig. Q.. This double socket a is cast in metal,preferably in iron, and is adapted to be embedded in a concrete orcementl floor. lilhen timbers are used in the 'lioor of the gymnasium,the double socket is secured to the timbers by bolts through the holesc* a" in the plate afi.4 Fach socket c is constructed to have thelinished internal annular ribs a5 a". These ribs are located adjacentthe upper and lower ends of the sockets. rlhe upper end a ol the socketwhere it extendsabove the plate c is approximately square and has therecessed portion 1.7, shaped to receive the circular cover as, as shownin Figs. l and 2. This cover ci has the hinge portion o" pivotallysecured in the recess a," bythe pin al", which extends through the'upperend a ot' the socket and through the hinge portion a of the cover, asshown in broken lines in Fig. l. A luga is ilornied on the under side ofthe cover adliacent the hinge portion a, and an adjustingscrew al isserewthrfatlcd through the lug, as shown in Figs. 2 and 4;. The coverwhen in the closed position closes the upper open end ot' the socketliush with the Vfloor-line.

.lhe cylindrical metal support has the inverted truncated cone shapedlower end o', on which is termed the annular Allanges b2 lf2, located atthe base and end ol the cone. lhese iianges are shaped and lin ished toiitthe internal IOO annular ribs a a5 of the sockets a a', as shown lthe sockets all formed integral, and hinged in Fig. 2. The upper liangeb2 is larger than the stem of the support b and forms the circular ledgeb3. A recess b4 is formed in the side of the support and extends upwardfrom the ledge 3. A latch f, having the lingerpiece b, the outwardly anddownwardly eX- tending lower end bl, and the vertical slot 72S, ismovably secured to the support b above the recess by the screws 729through the slot bs in the latch.

In the construction of parallel bars or similar exercising apparatusfour of the su pports b are used, the lower end of each support havingthe cone-shaped end 7)', the recess 6*, and the latch b5, as shown inFig. 2. For this purpose two of the double sockets a are embedded in thefloor of the gymnasium the required distance apart. When not in use, thecovers as as of the sockets are closed, thus presenting a hat unbrokensurface iush with the floorline. Then the exercising apparatus is to beused, the covers as as ofthe sockets are opened, th cone-shaped ends Z2of the supports I) of the apparatus are placed in the cone-shapedsockets a a, and each support locked in position by raising the' latchesb5, bringing the cover as against the side of the supports b, with thescrew 012 bearing on the ledge b3 of the support and lowering the latchto bring the lower end 57 over the edge of the cover, thus locking thecover to the support and the support to the socket. By this constructionthe supports are firmly held in the sockets by the wedging action of thecone-shaped ends in the cone-shaped sockets,'the supports are locked tothe sockets, thereby preventing accidents by the supports jumping ont ofthe sockets when the apparatus is in use, and the supports are easilyremoved from the sockets by raising the latches on the supports.

It is evident that my improved socket could be constructed and used as asingle socket, if required, or a plurality of sockets could be connectedtogether by a plate and web, as shown in Fig. 2, without materiallyaecting the spirit oi' my invention.

Having thus described my invention, Iclaim as new and desire to secureby Letters Patent-- l. In a gymnasium apparatus, a truncatedcone-shapedsocket, a hinged cover for closing the upper open end of the socket, andmeans carried by the cover for locking a support to the socket.

2. In a gymnasium apparatus, a double socketconsistingoil twotruncated-cone-shaped sockets having internal annular ribs, means forconnecting the sockets consisting of a plate and strengthening-web, andmeans for closing the open upper end of the sockets, as described.

3. In a gymnasium apparatus, a double socket consisting' oi' twoinverted truncated cone shaped sockets having internal annular ribs,aplate and strengthening-web connecting covers for closing the upper openend of the sockets, as described.

4C. In a gymnasium apparatus, the combination of a double socketconsisting' of two inverted truncated cone shaped sockets havinginternal annular ribs, and a plate and strengthening-web connecting thesockets all formed integral, ot' supports for the apparatus each supporthaving a truncated-coneshaped lower end on which are annular flangesadapted to lit the annular ribs in the sockets, as described.

5. In a gymnasium apparatus, the combination ot' an inverted truncatedcone shaped socket having internal annular ribs, a hinged cover, andmeans for securing the socket in the iioor lush with the `iioor-line,and a support having a truncated-cone-shaped lower end on which areannular flanges adapted to t the annular ribs in the socket, and meansfor locking the support to the socket, as described.

6. In a gymnasium apparatus, the combination with a double socket, aplate and strengthening-web connecting the sockets, and hinged coversfor closing the upper open end of the socket, of supports for theapparatus, the lower end of each support formed to iit the socket, andmeans for securing the support to the sockets, for the purposedescribed.

7. In a gymnasium apparatus, the combination with a double socket, aplate and strengthening-web connecting the sockets, andhinged covers forclosing the upper open end of the sockets, of supports for the apparatusthe lower ends of which are formed to it the sockets, and means carriedby the hinged covers for locking the supports to the sockets, asdescribed.

8. In a gymnasium apparatus, the combination with two sockets, a plateand strengthening-web connecting the sockets all formed integral, acover pivotally secured to the top of each of the sockets, a lug formingpart of the cover, and a set-screw in screw-thread engagement with thelug, of supports for the apparatus the lower ends of which are formed toit the sockets and provided with means with which the set-screw carriedby the lugs on the covers may come in contact to lock the supports tothe sockets, as described.

9. In a gymnasium apparatus, the combination with two sockets, a plateand strengthening-web uniting the sockets, a cover pivotaIly secured tothe top of the sockets, a lug on each of the covers, a setscrew inscrew-thread engagement with the lug, of supports for the apparatus thelower ends of which are formed to fit the sockets, means on the supportwith which the setscrews carried by the lugs on the covers come incontact to lock the support to the socket, and means carried by thesupports IOO IIO

IIS

to lock the covers to the supports, as described.

l0. ln a gymnasium apparatus, the combination of a double socket a,consisting of a pair of' inverted truncated cone-shaped sockets ct aconnected together by a plate a2 and a web c3 all formed integral, eachsocket having the internal annular ribs a5 a5, the re cessed portion a7,and the cover a8 which has the hinge portion a pivotally secured to thesocket by the pin c1, and a lu a supporting the adjusting-screw 0,12, ansupports `for the apparatus, each support b having an inverted truncatedcone-shaped lower end b on which is formed the annular flanges b2 b2adapted to fit the inner annular ribs a5 a5 of the sockets, the circularledge b, the recess b4 in the side of the support extending up-

